Here's what it says in the A156 manual:

"If the position of jumper J1 on the A-156 circuit board is changed
the first quantizer has the same features as quantizer 2, i.e. the 3
switches determine the behaviour of quantizer 1 as well."

I think you're safe.

Regards,
Kevin

--- In Doepfer_a100@yahoogroups.com , "levka0" <levka@w...> wrote:
> Hi There
> Does any body know how to change the internal jumper on the A-156
> quantizer so that the upper channel copies the settings of the
lower
> chanel (instead of quantizing to all 12 half-notes)
>
> I noticed a single jumper on the PCB, and it appears obvious, but I
> did not want to take the risk of destroying my module
>
> Any help is appreciated
> Regards
> Joost